interesting. A little story here, I first learned to use a new j model convertor in my hemi belvedere at St. louis one year. There was a 70 hemi barracuda in my class, I was about 4 thenths faster than him in all the time trials. Class elim. came around, he staged and stalled so high I COULD HEAR HIM, I was holding about 2500, we cut the same light, and he jumped out about 4 car lengths on me , I caught him at the finish line and thot I had beat him, but the win light came on in his lane. We ran the same identicle E T, and I was "4 full mph faster" than him , but he won !